[Slackbuilds-users] Updates - 20170722.1 python3 support

[David Spencer]

>> We have added python3 support to several scripts due to changes in
>> previous public updates (python-requests) that it broke openshots.
>>
>
>> Sat Jul 22 00:00:07 UTC 2017
>> python/idna: Add python3 support.
>> python/python-certifi: Add python3 support.
>> python/python-chardet: Add python3 support.
>
>
> Please, mention it in the README.

Done in my branch
thanks Andrzej :)
-D.